Hello Geoff and all,
Thank you for pointing it out, I must say I don't read many of the until
you brought this up.
I also wonder if someone is seeing what you have mentioned. Again, this
week shows similar thing with these updating about two-times per minute:
TOP 20 Unstable Prefixes
Rank Prefix Upds % Origin AS -- AS Name
1 - 93.181.192.0/19 22303 0.6% AS13118 -- ASN-YARTELECOM
Verhnevolzhsky branch, RU
2 - 110.170.17.0/24 22036 0.6% AS134438 -- AIRAAIFUL-AS-AP Aira &
Aiful Public Company Limited, TH
3 - 103.242.52.0/22 20105 0.6% AS131390 -- ECOMVIET-AS-VN Vietnam
E-commerce Development Centre, VN
As you have mentioned that generally no more dampening. It would be nice if
someone could contact these operators and let them know. Is there a
mechanism in place in contacting the admin of these AS/prefixes or their
upstream? Should there be one?
I also wonder about the general cause of these high-frequency updates. Is
it from router processing overload, bug in the router, simply poor
connectivity or other reasons?
ram
On Sun, Jun 19, 2016 at 4:22 AM, Geoff Huston gih@apnic.net wrote:
On 19 Jun 2016, at 6:05 AM, Mikael Abrahamsson swmike@swm.pp.se wrote:
On Fri, 17 Jun 2016, cidr-report@potaroo.net wrote:
TOP 20 Unstable Prefixes
Rank Prefix Upds % Origin AS -- AS Name
1 - 202.65.32.0/21 28086 0.8% AS10131 -- CKTELECOM-CK-AP Telecom
Cook Islands, CK
2 - 110.170.17.0/24 21868 0.7% AS134438 -- AIRAAIFUL-AS-AP Aira &
Aiful Public Company Limited, TH
3 - 123.231.192.0/24 21562 0.7% AS133841 -- IDOLA-BROADBAND-AS-ID
INDONESIA BROADBAND ACCESS - ANYWHERE, ID
4 - 93.181.192.0/19 20895 0.6% AS13118 -- ASN-YARTELECOM
Verhnevolzhsky branch, RU
5 - 123.231.206.0/24 19170 0.6% AS133841 -- IDOLA-BROADBAND-AS-ID
INDONESIA BROADBAND ACCESS - ANYWHERE, ID
6 - 123.231.193.0/24 19082 0.6% AS133841 -- IDOLA-BROADBAND-AS-ID
INDONESIA BROADBAND ACCESS - ANYWHERE, ID
7 - 195.128.159.0/24 15455 0.5% AS56636 -- ASVEDARU , RU
8 - 192.254.88.0/24 15452 0.5% AS21859 -- ZNET - Zenlayer Inc, US
9 - 185.11.121.0/24 14957 0.5% AS202105 -- DSP-AS , SA
Everyone of these prefixes have managed to average one update per 40
seconds during a week, or worse. How is that even possible? Yes, I know we
don't generally have dampening anymore, but geez, that's a lot of updates.
In the case of Cook Islands Telecom the problem is not directly with them
- its their one-up upstream Spark NZ (AS4648) who appears to be flicking
this route across a number of transit upstreams (
http://bgpupdates.potaroo.net/cgi-bin/per-prefix?prefix=202.65.32.0.21)
Geoff
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